What should you know about isolated diastolic hypertension?

Isolated diastolic hypertension means the lower blood pressure number is raised while the upper number is not. The lower number reflects pressure in the arteries between heartbeats. A clinician confirms the pattern with careful repeat measurements because activity, stress, caffeine, pain, and an incorrect cuff size can temporarily change a reading.

Blood pressure is recorded as systolic over diastolic. In this pattern, the diastolic value remains elevated even though the systolic value is below the hypertension threshold used by your clinician. The pattern can occur at any age and may have no noticeable symptoms. It is a blood-pressure finding, not a diagnosis of a particular underlying disease.

Your clinician may review medicines, kidney health, sleep quality, weight, alcohol intake, and family history. Untreated hypertension can place strain on blood vessels and organs over time, including the heart, brain, and kidneys. Read more about Hypertension in the linked condition guide.

Arrange a routine medical review if repeat readings remain high. Bring a record of readings taken while seated and rested, and note the time, symptoms, medicines, and recent caffeine or exercise. Do not stop or change prescribed treatment without medical advice.

Helpful habits include reducing salty processed foods, staying active within your abilities, avoiding tobacco, moderating alcohol, and keeping regular sleep. If you snore loudly or wake unrefreshed, ask about Obstructive Sleep Apnoea. Kidney disease and obesity can also affect blood pressure and may need assessment.

Seek emergency help for a very high reading accompanied by chest pressure, severe breathlessness, fainting, new weakness or numbness on one side, trouble speaking, confusion, or a sudden severe headache. These symptoms can signal an emergency such as Stroke, Angina, or Heart Failure and should not be managed by waiting for another home reading.

Without alarming symptoms, contact your clinician promptly if readings stay high, rise repeatedly, or occur with pregnancy, kidney problems, or a medicine change.

Ask: How was my blood pressure confirmed? Should I use home monitoring? Could any medicine, sleep problem, or kidney issue be contributing? What target applies to me, and when should my readings be reviewed?